This is an external L-shaped corner connector for 20x20 V-slot aluminum extrusion profiles.

It joins two profiles at a 90-degree angle from the outside, keeping the interior of the corner open — perfect for clean frame geometry, panels, or enclosure corners.

The connector slides or snaps into the adjacent profiles’ ends, holding them together without the need for screws or T-nuts.

It’s strong enough for lightweight to moderate structures such as printer frames, LED boxes, or panel corners.

✅ Features

Designed for V-slot / OpenBuilds 2020 profiles

External corner bracket – joins two profiles at 90°

Clean open interior corner (profiles don’t overlap)

Snap-fit / friction-fit design – no hardware required

Smooth outer faces for mounting panels or covers

Printable flat on the bed, no supports needed

🧰 Applications

Frame corners for enclosures or printers

LED or acrylic panel frames

CNC / laser chassis corners

Lightweight mechanical structures

🛠 Recommended Print Settings

Material: PETG or ABS (for toughness), PLA for prototypes

Layer Height: 0.2 mm

Infill: 40–100 % (depending on strength needs)

Supports: Not required

Orientation: Print flat

📏 Compatibility

V-Slot 2020 aluminum extrusion

Also fits most 20×20 T-slot profiles

V-Slot 2020 External Corner Connector (L-Bracket)

0.2mm layer, 2 walls, 15% infill

0.2mm layer, 2 walls, 15% infill